Dpends on how you define Christianity
Isit just believng there is/was/will be a Messiah (Christ)?
Is it believing it was Jesus/Yeshua?
Whchever, what about the rules within?
Are they strict or.simply.guidelines? Says who?
Etc.
As far as I understand it, you can.
You're just constantly setting a bad example.to others (as per the implication of sexual immorality), but you yourself are cool if you're sincere about being better at every step (just that this particular step is too much for you to overcome)